Spinning spindle



Aug. 15, 1939 G. H. MAGRATH SPINNING SPINDLE Filed April 25, 1957 n i.. a w j WMJW y V b n a :if IM L n LL: MW l... y y A L f f MJ, f a M W MM G f .W

Patented Aug. 15, 1939 UNITED STATES PATENT oFFIcE amasar y SPINNING SPINDLE.

Application April 23, 193'?, Serial No. 138,595

`2 Claims. (Cl. 308-151) This invention relates to spinning machines, and more particularly to a spindle mounting and associated parts.

In spinning machines it is the usual practice r, to provide upper and lower bearing members for `rotatably supporting the blade and whirl, the lower bearing member usually consisting of a bearing mounted in or integral with the lower end of the bolster or case and arranged to suplo port the blade and whirl at the proper elevation relative to stationary parts of the mounting. Due to the wear at the pointof the blade, it is necessary periodically to regrind the end of the blade, and in order to compensate for the reduced length l of the blade, there is usually provided an adjusting screw which is operative to raise the blade and whirl to their proper level. Such constructions are objectionable due to the fact that vit is practically impossible to prevent an appreciable leakage of oil from the bolster or case, particularly when making an adjustment, and consequently there is not only a substantial loss of oil, but also a danger of the oil level in the bolster or case dropping oi to an extent suicient to impair proper operation.

The principal objects of the present invention are to overcome the aforementioned' difculties and to provide a spindle mounting which is of simple design and of strong and durable construction, embodying a minimum number of parts which may be easily dismembered and assembled, and which is reliable and eflicient in operation.

Further objects will be apparent from a consideration of the folowing description and accompanying drawing which show different embodiments of the invention chosen for the purpose of illustration.

In the drawing:

-Fig. 1 is an elevation, with parts broken away and shown in section, of a spindle and mountingl therefor constructed in accordance with the present invention; and

Figs. 2 and 3 are fragmentary sectional elevations illustrating different modifications.

l The embodiment shown in Fig. 1 comprises a bolster case I or the like tubular member having an exteriorly threaded periphery 2 which receives a nut 3 by means of which the bolster case may be firmly clamped or otherwise secured to the frame 4 of the spinning machine. The upper end of the bolster is formed with an enlarged bore 5 defining a flat annular shoulder 6 which supports the top bearing member, here shown as an anti-friction bearing 8, having an inner race which snugly iits about the blade III and an outer race which tightly ts within the upper end of the bolster, resting onthe shoulder 6. The blade I0 carries a whirl II having adriving ange I2 which surrounds the upper end of the bolster and case. The lower end or point of the blade is 5 supported by a step bearing I5 which is integral with the lower end of the bolster.

The lower end of the bolster case is provided 'with an end wall I6 of considerable depth and this end wall is formed with a threaded opening 10 I'I which receives a threaded plug I8. The inner end of the plug is of reduced diameter and defines a neck 20 which projects inwardly into the interior of the case and provides an adjustable support for the step bearing or bolster l5 I5. The inner end of the plug is formed with a diametrically extending recess 22 constituting a means by which 'the plug I8 may be rotated so as to vary the position of the step bearing I5 axially of the case. An oil-retaining gasket 25 tightly 20 ts about the neck 20 withits outer periphery having a pressed t against the inner wall of the case. 'I'he gasket 25 is preferably provided with stiiening plates or washers 26 which may be threaded or tted tightly about the neck 20. 25

As here shown the plug is so designed that its outer end is normally spaced inwardly from the outer end of the opening Il, leaving a space which receives a screw-threaded cap or closure 28 andagasket 30 is interposed between the inner 30 end of the closure 28 and the outer end of the plug I8. 'I'he gaskets 25 and 30 are composed of an oil-resisting material such as vulcanized rubber, chloroprene, leather, `treated bre, or the like, and as they t tightly within the case 35 and opening, they prevent even a slight seepage of oil from the case.

In order to adjust the position of the stop bearing axially of the case, it is merely necessary to remove the closure 28 and gasket 30, and by means ,10 of a screw driver the plug I8 may be rotated inone direction or the other to vary the position of the step bearing I5. It will be noted that in making such adjustment it is unnecessary to remove the blade, and also that as the position 45 of the gasket 25 is not disturbed to any material extent, there is no danger of leakage developing during or subsequent to such adjustment.

In the embodiment shown in Fig. 2, the lower end of the case la is formed with an exteriorly 50 threaded extension 32 which projects beyond its threaded opening Ila and a bolster 34 carries a bearing member 35 which cooperates with the upper end of the plug |811. to support the blade I0 in a fixed position axially of the case Ia. The 55 neck 38 which is of reduced diameter and having an outer end formed with a diametrically extending slot 39 by means of which the position of the plug |8a and bearing 35 may be varied as above described. An oil-retaining gasket l0 tightly tits about the inner end of the neck' 38 and engages the marginal portion surrounding the opening lla. A locking nut 42 is carried by the neck 38 and this nut is operative not only to hold `the plug I8a in adjusted position, but also to clamp the gasket I0 against the end of the case, 'thus providing an eilective seal for preventing leakage of oil from the case. The end of the case is enclosed by a removable cap 45 which has a screw-threaded engagement with the extension 32.

In the' embodiment shown in Fig. 3 the lower end of the bolster` case Ib is formed with a threaded opening which receives a screw-threaded plug |8b, as in the previously described embodiments, and a bolster 52 carries the usual step bearing 54. In this particular embodiment the length of the plug I8b is such that its outer end extends a substantial distance beyond the end of thecase, and its inner end is provided with an enlarged head vI9 which supports the bolster 52 and step bearing 5I. The outer end of the -plug |8b is provided with a diametrically extending slot by means of which the plug may be rotated to vary the position of the step bearing 54. The end of the case I b is lpreferably formed with a flat outer surface 55 and an oil-retaining gasket 58, tightly fitting about the plug |817, engages the surface 55. A removable cap or the like closure 58 is formed with a threaded opening 59 which engages the outwardly projecting end of the plug Hb and holds the cap in assembled relation with the case. The cap 58 not only acts as a check nut for the plug4 lab, but also constitutes a jaw for clamping the gasket 56 firmly against the surface 55, thus providing an eifective seal preventing leakage of oil from the case.

While I have shown and described different desirable embodiments of the invention,it is to be understood that this disclosure is for the purpose of illustration and that various changes in shape, proportion and arrangement of parts, as

2,169,587 kouter end of the plug is provided with a threaded well as the substitution of equivalent elements for those herein shown and described, may be made without departing from the spirit and scope of the invention as set forth in the appended claims.

I claim:

1. An adjustable oil-tight spindle construction comprising a tubular member adapted to hold a fluid lubricant. said tubular member having at its lower end a threaded aperture, a bearing dis-v posed within the tubular member and movable longitudinally thereof, said bearing beingadapted rotatably to support `the lower end of a blade, a screw-threaded plug disposed in said aperture with its upper end projectinginto the lower end of said tubular member and supporting said bearing in substantially fixed position axially of the tubular member, means for rotating said plug so as to vary the position of said bearing axially of said tubular member, oil retaining means carried by said plug comprising a compressible gasket interposed between a pair of washers carried by the upper end of said plug, said gasket being Aspaced from the bearing and having its periphery engaging said inner wall of the tubular member in all positions of adjustment of said plug.

2. An adjustable oil-tight spindle construction comprising a tubular member adapted to hold a fluid lubricant, said tubular member having at its lower end a threaded aperture, a bearing disposed within the tubular member and movable longitudinally thereof, said bearing being adapted rotatably to support the lower'end of a blade, a screw-threaded plug disposed in said aperture with its upper' end projecting into the lower end of said tubular member and supporting said bearing in substantially iixed position axially of the tubular member, said plug having a reduced portion and means at its lower end for rotating it so Y as to vary the position of said bearing axially of said tubular member, and an oil-retaining gasket secured on said reduced portion of said plug, said oil-retaining gasket being spaced from said bearing and having its periphery engaging the inner Wall of the tubular' member in all Apositions of adjustment of saidjplug.

GEORGE H. MAGRATH. 

